CN104395906A - Symmetry of discovered geometric relationships in a three dimensional model - Google Patents
Symmetry of discovered geometric relationships in a three dimensional model Download PDFInfo
- Publication number
- CN104395906A CN104395906A CN201380032695.5A CN201380032695A CN104395906A CN 104395906 A CN104395906 A CN 104395906A CN 201380032695 A CN201380032695 A CN 201380032695A CN 104395906 A CN104395906 A CN 104395906A
- Authority
- CN
- China
- Prior art keywords
- target element
- symmetrical plane
- pdm system
- model
- equivalence class
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2111/00—Details relating to CAD techniques
- G06F2111/04—Constraint-based CAD
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- Evolutionary Computation (AREA)
- Computer Hardware Design (AREA)
- Processing Or Creating Images (AREA)
- Complex Calculations (AREA)
- Image Analysis (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Architecture (AREA)
- Software Systems (AREA)
- Stored Programmes (AREA)
Abstract
Systems and methods for identifying symmetry relationships in product data management (PDM) systems. A method includes receiving (505)a 3D model including a plurality of components and identifying (515) a plurality of target components (c1, c2, c3, c4, c5) from the plurality of components. The method includes identifying (515) a symmetry plane (p1, p2) in the 3D model and determining (520) the location of each of the target components with respect to the symmetry plane. The method includes adding (525) the target components to respective groups according to the determined locations, and creating (530) an equivalence class (sa1, sd1) for each group of target components. The method includes storing (535) a symmetry relationship between the created equivalence classes
Description
The present invention relates to the method for the identification symmetric relation according to independent claims, product data management data handling system and computer-readable medium.
Technical field
The computer-aided design (CAD) that present disclosure relate generally to manages product data and sundry item, visual and manufacturing system, Production Lifecycle Management (" PLM ") system and similar system (being referred to as " product data management " system or " PDM " system).
Background technology
PDM system manages PLM and other data.Expect the system improved.
Summary of the invention
The various embodiment disclosed comprise for improvement of the system and method for PDM process, comprise in product data management (PDM) system to the system and method that the symmetry in the geometric relationship found in three-dimensional model manages.Method comprises: reception comprises the 3D model of multiple assembly and identify multiple target element from described multiple assembly.The method comprises the symmetrical plane in identification 3D model and determines the position of each target element relative to symmetrical plane.The method comprises target element being added into respective sets according to determined position and forming for each target element builds equivalence class.The method comprises the symmetric relation between equivalence class that storage creates.
The above outlines the characteristic sum technological merit of present disclosure quite widely, and makes those skilled in the art can understand following detailed description better.Will be described below other aspect and the advantage of the formation claim theme of present disclosure.It will be appreciated by those skilled in the art that they can easily use disclosed design and embodiment as the basis of modifying to other structures of the identical object for realizing present disclosure or designing.Those skilled in the art it is to be further appreciated that such equivalent constructions does not depart from the spirit and scope of the broadest form of present disclosure.
Before embodiment below starting, set forth run through the definition of some word or expression that patent document uses can favourable: word " comprises (include) " and " comprising (comprise) " and derivation word thereof refer to hard-core comprising; Comprising property of term "or", refer to and/or; Phrase " be associated " and " associated with it " and derive from phrase can refer to comprise, be included, with its interconnection, comprise, be included, be connected to or be connected with it, be coupled to or couple with it, can communicate with, cooperate with it, interlock, arranged side by side, close with it, be tied to or with its binding, there is or have its character etc.; And any equipment of at least one operation of system, system or its part accused in term " controller ", no matter and such equipment is realized by least both combination in hardware, firmware, software or more.It should be noted that and the function that any concrete controller associates, no matter Local or Remote, can be centralized or distributed.Run through the definition that patent document provides some word and expression, even and if it will be appreciated by those skilled in the art that such definition is not in most of example but still is applicable to the existing of the word and expression be defined like this and following use in many instances.Although some words may comprise various embodiment, these words can be restricted to concrete embodiment by claims clearly.
Accompanying drawing explanation
In order to comprehend present disclosure and advantage thereof, carry out reference to following description by reference to the accompanying drawings now, wherein identical Reference numeral refers to identical object, in the accompanying drawings:
Fig. 1 depicts the block diagram of the data handling system that can realize embodiment;
Fig. 2 A and Fig. 2 B shows the example of the symmetrical entity according to disclosed embodiment;
Fig. 3 A shows and represents according to the simple examples of the model for illustration of symmetric relation of disclosed embodiment, and Fig. 3 B and Fig. 3 C shows the geometric relationship figure corresponding with Fig. 3 A according to disclosed embodiment;
Fig. 4 A shows wherein first etc. similarly has three members and the similar example comprising the model of only two members such as second according to disclosed embodiment, and Fig. 4 B shows the geometric relationship figure of the correspondence according to disclosed embodiment;
Fig. 5 depicts the process flow diagram of the process according to disclosed embodiment;
Fig. 6 shows the example according to the target element in the model of disclosed embodiment;
Fig. 7 show according to disclosed embodiment when assembly be moved and selectable constrained be kept time to selectable constrained use;
Fig. 8 shows when assembly makes the axle of assembly rotate selectable constrained use;
Fig. 9 shows the example of the segmentation undertaken by multiple symmetrical plane according to disclosed embodiment;
Figure 10 A shows the example of the single symmetrical plane according to disclosed embodiment, Figure 10 B shows the sensing (sense) of the correspondence according to disclosed embodiment, and Figure 10 C shows the graph of a relation of the correspondence according to disclosed embodiment; And
Figure 11 A shows the example of two symmetrical planes according to disclosed embodiment, and Figure 11 B shows the sensing of the correspondence according to disclosed embodiment, and Figure 11 C shows the graph of a relation of the correspondence according to disclosed embodiment.
Embodiment
Only illustratively and not should be construed as by any way limiting the scope of the disclosure for the various embodiments describing the principle of present disclosure in Fig. 1 to Figure 11 discussed below and patent document.It will be appreciated by those skilled in the art that the principle of present disclosure can be realized by any equipment suitably configured.Many novelty teachings of the application are described with reference to exemplary, non-limitative embodiment.
Geometric relationship identification makes user even can edit the model of non-protogenous or the model of importing model while retaining important design feature.
Given Arbitrary 3 D (3D) cad model, have many when editing user may wish retain geometric relationship.Such as, user may wish to keep some distance between two features for following characteristics: the feature that be about any line or plane " mirror image " or symmetry; Be kept parallel feature or other features.After finding such relation in a model, may need to consider symmetric relation especially.Disclosed embodiment comprises the system and method for the treatment of found symmetric relation.
Fig. 1 depicts the block diagram of the data handling system that can realize embodiment, such as carried out PDM system or the system for settling account of process as described herein especially by software or be otherwise configured to, and each system especially in multiple interconnection as described herein and communication system.The data handling system described comprises the processor 102 be connected with second level cache/bridge 104, and second level cache/bridge 104 is connected with local system bus 106.Local system bus 106 can be such as peripheral parts interconnected (PCI) framework bus.In described example, what be connected with local system bus also has primary memory 108 and graphics adapter 110.Graphics adapter 110 can be connected with display 111.
Other peripherals such as LAN (Local Area Network) (LAN)/wide area network/wireless (such as, WiFi) adapter 112 also can be connected with local system bus 106.Local system bus 106 is connected with I/O (I/O) bus 116 by expansion bus interface 114.I/O bus 116 is connected with keyboard/mouse adapter 118, disk controller 120 and I/O adapter 122.Disk controller 120 can be connected with memory device 126, memory device 126 can be the machine that is applicable to arbitrarily can with or machinable medium, include but not limited to: non-volatile, hard-coded type media such as ROM (read-only memory) (ROM) or erasable, EPROM (EEPROM), fc tape storage device FC and user's recordable-type media such as floppy disk, hard disk drive and compact disk ROM (read-only memory) (CD-ROM) or digital versatile disc (DVD) and other known optical, electrical or magnetic storage apparatus.
In shown example, what be connected with I/O bus 116 also has audio frequency adapter 124, and audio frequency adapter 124 can be connected with loudspeaker (not shown) to play sound.Keyboard/mouse adapter 118 is provided for the connection of the pointing device (not shown) as mouse, tracking ball, trajectory indicator.
It should be understood by one skilled in the art that the hardware that Fig. 1 describes can be different because of specific implementation.Such as, except using the hardware described or substitute the hardware described, other peripherals can also be used as CD drive etc.The example described only provides for purpose of explanation, and is not intended to imply that the framework about present disclosure limits.
The operating system adopting graphic user interface is comprised according to the data handling system of the embodiment of present disclosure.Operating system allows multiple display window to be presented in graphical user interfaces simultaneously, and wherein each display window provides interface for the different instances of different application programs or same application domain.User can operate the cursor in graphic user interface by pointing device.The position of cursor can be changed and/or produce if the event of button of clicking the mouse is to drive Expected Response.
Can adopt the various commercial operating systems be suitably modified just like the product Microsoft Windows of Microsoft company being positioned at State of Washington Randt and covering
tMversion.Revise or create this operating system according to described present disclosure.
LAN/WAN/ wireless adapter 112 can be connected with network 130 (not being a part for data handling system 100), described network 130 can be the combination of any public or private data disposal system network or these networks as known to those skilled, comprises the Internet.Data handling system 100 can communicate with server system 140 via network 130, but also can be implemented as such as independent data handling system 100, and described server system 140 neither the part of data handling system 100.
The mathematical definition of as used herein parity price class (" EC ") is a group membership of shared relation of equivalence.Relation of equivalence has reflexivity, symmetry and transitivity.Equivalence class has following useful attribute: element can be only the member of the equivalence class limited by specific relation of equivalence.
Thus equivalence class may be used for limiting the geometric relationship in cad model, and in cad model, those relations are relation of equivalence.
Relation of equivalence is present in wherein geometric configuration and shares in the model of at least one equivalent assemblies; Centered by the assembly of relation of equivalence, axle, plane, direction, radius, minor radius or half-angle.
Useful in Geometric Modeling according to the following relation of equivalence of disclosed technology:
● equivalent (I): geometric configuration shares identical type and all component.
● with one heart (SC): geometric configuration shares same center element.
● coaxial (SA): geometric configuration shares same shaft assembly.
● isoplanar (SP): geometric configuration shares same plane assembly.
● similar shape (SS): geometric configuration shares identical type component and same radius, large radius and minor radius or half angular component.
● in the same way (SD): geometric configuration shares same direction assembly, is aligned or oppositely aligns.
According to these relation of equivalence, the class of the geometric configuration comprising shared identical relation of equivalence can be formed.
Many models are built into and cross given plane symmetry, and expect to find and retain these when editing these models symmetrical.The part of other conditions geometrically set up that the symmetrical entity in model is still found with symmetry usually simultaneously.The editor that these subsidiary condition of frequent enforcement meeting limited subscriber can carry out.
Fig. 2 A and Fig. 2 B shows the example of symmetrical entity.In fig. 2, the face 202 of right cylinder c1 is symmetrical with face 204 both sides of right cylinder c2 via plane P 1206.Both right cylinder c1 and right cylinder c2 are also geometrically equal to.Keeping c1202 and c2204 to be equal to can not make c1202 be rotated as shown in Figure 2 B.
Between these equivalence classes, there is hierarchical structure, as listed above, equivalent minimum, be then with one heart, coaxial, isoplanar and similar shape and last in the same way on top.
In various embodiments, the hierarchical structure between equivalence class can have in following characteristics one or more:
● the relation limited in lower level class implies higher level class relation, but these relations are not expressed especially.Such as, two equivalent planes also isoplanar and in the same way.
● can be interpreted as from node A to the directed edge of Node B " member that B is A " or " A is the father node of B ".
● the terminal node (that is, waiting similar member) of figure is made up of model geometric shape.
● each terminal node must belong to one and an only equivalent category node.
● each category node can belong to and has dissimilar multiple equivalence classes, but each category node only can belong to a class of certain type.
Product assembly can comprise multiple basic 3D assembly, and each in basic 3D assembly can share various relation of equivalence.Each in these assemblies can be represented by the connection layout of the relation of equivalence illustrated between each component type.
When asking to preserve symmetric condition and these symmetric condition are present in model, relative to the preferred symmetric relation of other relations.To all relation conditions being preferably applied to finding in a model of symmetry.Because symmetrical parts does not have equivalence usually, such as, symmetrical parts may not be in same direction, so symmetric relation described herein is not a part for equivalence class hierarchical structure described above.
Utilize the mathematical concept of equivalence class to find and store geometric relationship to represent the geometric relationship of equal value in model.Then between these classes, non-equivalence relation is formed.Complete and compact expression is guaranteed in this expression, and makes it possible to effectively find.
The simple examples that Fig. 3 A shows for illustration of the model of symmetric relation represents, and Fig. 3 B and Fig. 3 C shows the geometric relationship figure corresponding with Fig. 3 A.
Fig. 3 A shows right cylinder c1, c2, c3 and c4, on every side of plane P 1 each two.Fig. 3 B shows and represents that c1, c2, c3 and c4 are the graphs of a relation of a part of similar i1, same coaxial class sa1 and the same class sd1 in the same way such as same.The similar discoveries such as Fig. 3 B shows are opened and the graph of a relation of symmetric relation discovery closedown.
As can from Fig. 3 A see, if will retain when one of rotational circle axis of a cylinder, to cross plane P 1 symmetrical, then must by etc. similar i1 split into two classes, wherein a class comprises c1 and c2 and another kind ofly comprises c3 and c4.That is, if rotate a cylinder axis, then at least corresponding/relative cylinder axis on the opposite side of plane P 1 must be also rotated in opposite direction.Assuming that c1 and c2 keeps equivalent, and c3 and c4 keeps equivalent, then shown in Fig. 3 B etc. similar i1 must be split into similar i1 and i2 such as two as shown in Figure 3 C.
Also this division must be extended to more than i1/i2 coaxial class and in the same way class produce structure as shown in Figure 3 C, wherein symmetrical Sym1 be then used in two etc. similar between.The graph of a relation when discovery of the similar discoveries such as Fig. 3 B shows and symmetric relation is all opened.
Make user can move or rotate in these right cylinders one of any to this fractionation of complete class hierarchical structure, and system correspondingly can be revised/move and show other faces.
Many classes can not comprise the member set of full symmetric.Fig. 4 A shows the example with drag: wherein, as shown in the geometric relationship figure of Fig. 4 B, wait similar i1 to have three members and etc. similar i2 comprise only two members.
In this case, this structure is still split by symmetrical plane P1, but unlike splitting equably in a first example, but makes right cylinder c0, c1 and c2 the part of similar i1 such as be, and right cylinder c3 and c4 such as is at the part of similar i2.Symmetric relation is illustrated as Sym1:P1, represents the symmetric relation 1 about symmetrical plane P1.
Herein this process split the class in structure is called " segmentation ".By all members of inspection relation to have determined whether there is any two member symmetric, thus segmentation can be triggered.If have any two member symmetric, then process as described below can be used to split class.
Fig. 5 depicts the process flow diagram of the process according to disclosed embodiment, and describes the process flow diagram of this process about other illustrative figure below.
System acceptance model (step 505)." system " can be PDM data handling system described herein, and model is the 3D model comprising multiple assembly." reception " used herein can comprise load from memory device, from other equipment or process receive or via with the receiving alternately of user.This model comprises the geometric configuration making it possible to compare for the feature of geometric relationship described herein to assembly and the parameter of each assembly.
System can identify will for the checked multiple target element (step 510) of symmetry.This step can be carried out as found the order of symmetric component in response to user's input, and can carry out this step to all members of relation object as described herein.This step can comprise reception or create the graph of a relation comprising target element.
Fig. 6 shows the example of the target element in model.
System can symmetrical plane (step 515) in model of cognition.This step automatically can be carried out by system, or this step can comprise the user's selection receiving symmetrical plane.Fig. 6 shows symmetrical plane S and several face of cylinder C1 to C5.
On any side that system can be positioned at symmetrical plane for each target element determination target (step 520).Any process of the side for allocation component can be used, such as but not limited to using bounding box center or barycenter, use color or Other Engineering or design attributes or using other modes.Target element can be single model face such as when splitting etc. similar or when the high-rise class of segmentation as the set in model face time coaxially or in the same way or other.
By identifying each target element about the position of symmetrical plane, target element comprises: be determined to be the assembly being positioned at symmetrical plane front; Be determined to be the assembly being positioned at symmetrical plane rear; And be determined to be the assembly be positioned on symmetrical plane.Certainly, " in front " or " in the wings " is relative terms, and is intended to comprise and determines about " left side " and " right side ", "up" and "down" or other equivalence.Such as, in figure 6, there is the right cylinder of the face of cylinder C1 and C2 on the left side of symmetrical plane S, and the right cylinder with the face of cylinder C4 and C5 is on the right of symmetrical plane S.
Each target element is added into group (step 525) according to identified position by system.If there is remaining target element, then this process can be circulated to step 520.Such as, the right cylinder with the face of cylinder C1 and C2 can be placed in first group, and the right cylinder with the face of cylinder C4 and C5 is placed in second group.Corresponding group is included in those target elements on the either side of symmetrical plane.
System is formed for each non-NULL and is built equivalence class (step 530).And can form for second and build class for first group.This step can comprise new class is placed in graph of a relation.
System creation comprises the symmetric relation (step 530) between two groups of symmetric component.System can create the symmetric relation between first group and second group.
This symmetric relation (step 535) of system storage.This step can comprise and stores symmetric relation with graph of a relation and the graph of a relation that can comprise memory modify.
In some embodiments, find and process etc. similar in symmetry be first used as trigger, this trigger be used in high-rise class, repeat this process instead of must symmetry be rediscovered.
As mentioned in superincumbent process, in some models, segmentation may draw to draw a conclusion: member neither on the side of symmetrical plane not on its other side yet, in this article this is called " from symmetrical ".It five face of cylinder C1 of a similar part such as can be that Fig. 6 shows ..., C5; The right cylinder with face of cylinder C3 is for from symmetrical and can be placed in the 3rd group.
Differently can process the 3rd group of face (in the example of fig. 6, the 3rd group only comprises single C3).Substitute to be constrained for and keep symmetrical when mobile, depend on involved surface type, different constrain set can be applied.In this example, apply following constraint, but certainly, other implementations can use other to retrain:
● the right cylinder with face of cylinder C3 is constrained for and symmetrical plane keeping parallelism.
● the right cylinder with face of cylinder C3 be applied with two selectable constrained, one of them constraint for keep with comprise there is the face of cylinder C1 and C2 cylindrical etc. similar unanimously, and another constraint for keep with comprise there is the face of cylinder C4 and C5 cylindrical etc. similar unanimously.The movement that this constraint of optional expression can not be asked with user or conflict mutually with retraining other of model.
In some implementations, such as, system can impose restriction to keep center geometries to keep from symmetrical about symmetrical plane.In cylindrical situation, such as, this constraint can be cylinder axis and symmetrical plane normal parallel.For plane, this constraint can be that plane normal is vertical with symmetrical plane normal.Then selectable constrained may be used for attempting keeping center geometries on either side with etc. similar equivalent.
To selectable constrained use when Fig. 7 uses the element identical with Fig. 6 show the right cylinder when moving up with face of cylinder C4 and maintain selectable constrained.When the right cylinder with face of cylinder C4 is moved upward, the right cylinder with face of cylinder C5 is also moved upward as a part for the similar/group such as second, the right cylinder with the face of cylinder C1 and C2 as similar with second etc./organize symmetrical first etc. similar/part of organizing also to be moved upward, and the right cylinder with face of cylinder C3 is moved upward according to selectable constrained above.
Fig. 8 uses the element identical with Fig. 6 to show when its axle rotates by the right cylinder with face of cylinder C4 selectable constrained use.When the right cylinder with face of cylinder C4 is rotated, the right cylinder with face of cylinder C5 is also rotated as a part for the similar/group such as second, the right cylinder with the face of cylinder C1 and C2 as similar with second etc./organize symmetrical first etc. similar/part of organizing to be rotated in opposite direction, and the right cylinder with face of cylinder C3 is static according to above selectable constrained maintenance.
Above-mentioned dividing processing can also for the treatment of multiple symmetrical plane.
Fig. 9 shows and carries out by multiple symmetrical plane P1 and P2 the example split.In this example, there is the plane of symmetry C1, C2, C3 all parallel with the right cylinder of C4 and not there is symmetry, and it can be all the member of single class in the same way (similar via two coaxial classes and two etc.).
But, the rotation of the axle of C1 be allowed, need by this in the same way class be divided into four group/classes and need to apply suitable symmetric relation.
Realize above content, " pointing to (sense) " that system distributes about each symmetrical plane to each assembly of class is formed " signature (signature) ".All members then with same-sign difference form single segmentation.This sensing is defined on which side of plane according to splitting scheme determining means.Plane front is defined as forward, and plane rear is defined as negative sense.In the situation of above process, according to the corresponding signature that the sensing by each target element limits, target element is divided into groups.
Figure 10 A shows the example of the single symmetrical plane P1 for right cylinder c0 to c4.Figure 10 B shows the sensing of the correspondence for these right cylinder c0 to c4 and face and plane, and Figure 10 C shows corresponding graph of a relation.
In this example, c1 and c4 is symmetrical, and c2 and c3 is symmetrical, and all five right cylinders are equal to.As shown in Figure 10 B, face c0, c1 and c2 have identical sensing, and face c3 and c4 has identical sensing.Thus, as illustrated in figure 10 c, the component of equivalent geometric configuration is slit into two groups, and creates similar i1 and i2 such as two, and wait similar between create symmetric relation Sym1.
Figure 11 A shows the example of two symmetrical plane P1 and P2 of the above face of cylinder c1 to c4 corresponding with Fig. 9.The correspondence that Figure 11 B shows for these right cylinders and face and plane is pointed to, and Figure 11 C shows corresponding graph of a relation.
In this example, right cylinder is symmetrical about two different symmetrical plane P1 and P2.When considering the sensing about two planes, as shown in Figure 11 B, all four right cylinders have distinct symbols difference (being limited by the combination pointed to).Thus, as shown in the graph of a relation of Figure 11 C, create four similar, coaxial classes such as independent and class in the same way.
Certainly, one skilled in the art will recognize that, unless indicated especially or requirement by sequence of operation, otherwise some step in above-mentioned process can be omitted, simultaneously or in a sequence carry out or carry out with different order.Step and the operation of various process can be combined in various embodiments.
Those skilled in the art should recognize, for simple and clear for the purpose of, do not describe in this article or describe the complete lattice and the operation that are suitable for all data handling systems used together with present disclosure.Alternatively, only describe and to describe in data handling system as part specific to present disclosure or understand the necessary part of present disclosure.The structure of data handling system 100 and the remainder of operation can follow arbitrary various current realization as known in the art and practice.
Importantly should be noted that, although present disclosure is included in description when complete functional system, but those skilled in the art are to be understood that, at least part of mechanism of present disclosure can be included in various forms of machine can with, computing machine can with or computer-readable medium in instruction form and be distributed, and no matter actual perform distribute instruction or signal bearing medium or the storage medium adopted particular type how, present disclosure is applicable all equally.Machine can comprise by the example of/computer-readable recording medium with/readable or computing machine: non-volatile, hard-coded type media is if ROM (read-only memory) (ROM) or erasable, EPROM (EEPROM) and user's recordable-type media are as floppy disk, hard disk drive and compact disk ROM (read-only memory) (CD-ROM) or digital versatile disc (DVD).
Although describe the illustrative embodiments of present disclosure in detail, but those skilled in the art are to be understood that, can when not departing from the spirit and scope of broadest form of present disclosure, various change is carried out to content disclosed herein, substitutes, modification and improvement.
It is the requisite item that must be included in right that description in the application should not be read as hint any specific element, step or function, and the scope of the theme of patent protection is only limited by the claim of authorizing.
The reference numerals list used, vocabulary
100 data handling systems
102 processors
104 high-speed caches/bridge
106 local system bus
108 primary memorys
110 graphics adapter
111 displays
112 LAN/WANs/wireless adapter
114 expansion bus interfaces
116 input/output bus, I/O bus
118 keyboard/mouse adapters
120 disk controllers
122 I/O adapters
124 audio frequency adapters
126 memory devices
130 networks
140 server systems
200 working parts
The 202 model faces of cylinder
The 204 model faces of cylinder
206 plane P 1
505 receive model
510 identify target element
515 identify symmetrical plane
520 determine the position of target relative to plane
Target is added into group according to position by 525
530 to form for each non-NULL and build equivalence class
535 store symmetric relation
The C1 face of cylinder
The C2 face of cylinder
The C3 face of cylinder
The C4 face of cylinder
The C5 face of cylinder
C0 right cylinder
C1 right cylinder
C2 right cylinder
C3 right cylinder
C4 right cylinder
C5 right cylinder
I is equal to
I1 class, waits similar
I2 class, waits similar
P1 plane, symmetrical plane
P2 plane, symmetrical plane
S symmetrical plane
SA is coaxial
SC is concentric
SD in the same way
SP isoplanar
SS similar shape
The coaxial class of sa1
Sd1 is class sd1 in the same way
Sym1 is symmetrical
Sym1:P1 symmetric relation
ASIC special IC
CAD computer-aided design (CAD)
I/O I/O
LAN LAN (Local Area Network)
PCI is peripheral parts interconnected
PDM product data management
PLM Production Lifecycle Management
WAN wide area network
Claims (20)
1., for identifying a method for symmetric relation, comprising:
In product data management system (100), receive the 3D model that (505) comprise multiple assembly, described product data management system (100) represents by PDM system (100) below;
(510) multiple target element (c1, c2, c3, c4, c5) is identified from described multiple assembly;
Identify the symmetrical plane (p1, p2) in (515) described 3D model;
Determine the position of (520) each described target element relative to described symmetrical plane (p1, p2);
According to determined position, described target element is added (525) to respective sets (sa1, sd1);
Form for each target element and build (530) equivalence class (sa1, sd1); And
Symmetric relation between the equivalence class (sa1, sd1) that storage (535) creates.
2. method according to claim 1, wherein, stores described symmetric relation with geometric relationship figure.
3. method according to claim 1 and 2, wherein, described respective sets comprises the described target element (c3) on the either side being positioned at described symmetrical plane (p1, p2).
4., according to method described one of in claims 1 to 3, wherein, store created equivalence class (sa1, sd1) with geometric relationship figure.
5. according to method described one of in claim 1,2 or 4, wherein, described PDM system (100) is also to not being positioned at described symmetrical plane (p1, p2) target element (c1 on either side, c2, c4, c5) identify, and described target is added into the 3rd group.
6. according to method described one of in claim 1 to 5, wherein, described PDM system (100) distributes sensing relative to one or more symmetrical plane (p1, p2) to each target element.
7. method according to claim 6, wherein, divides into groups to described target element (c1, c2, c3, c4, c5) according to the described corresponding signature limited of pointing to by each target element (c1, c2, c3, c4, c5).
8. a product data management system (100), described product data management system (100) represents by PDM system (100) below, and it comprises:
At least one processor (102); And
Can access memory (108,126), described PDM system (100) is configured to:
Receive the 3D model that (505) comprise multiple assembly;
(510) multiple target element (c1, c2, c3, c4, c5) is identified from described multiple assembly;
Identify the symmetrical plane (p1, p2) in (515) described 3D model;
Determine (520) each described target element (c1, c2, c3, c4, c5) position relative to described symmetrical plane (p1, p2);
According to determined position, described target element is added (525) to respective sets;
Form for each target element and build (530) equivalence class (sa1, sd1); And
Symmetric relation between the equivalence class that storage (535) creates.
9. PDM system (100) according to claim 8, wherein, described symmetric relation stores with geometric relationship figure.
10. PDM system (100) according to claim 8 or claim 9, wherein, described respective sets comprises the described target element (c3) on the either side being positioned at described symmetrical plane (p1, p2).
PDM system described one of in 11. according to Claim 8 to 10, wherein, the equivalence class (sa1, sd1) created stores with geometric relationship figure.
PDM system (100) described one of in 12. according to Claim 8,9 or 11, wherein, described PDM system (100) is also to not being positioned at described symmetrical plane (p1, p2) target element (c1 on either side, c2, c4, c5) identify, and described target is added into the 3rd group.
PDM system (100) described one of in 13. according to Claim 8 to 12, wherein, described PDM system (100) distributes the sensing relative to one or more symmetrical plane to each target element.
14. PDM systems (100) according to claim 13, wherein, described target element (c1, c2, c3, c4, c5) is grouped according to pointing to by each target element described the corresponding signature that limits.
15. 1 kinds of codings have the non-transitory computer-readable medium of computer executable instructions, and described computer executable instructions makes the following product data management system (100) represented by PDM system (100) upon being performed:
Receive the 3D model that (505) comprise multiple assembly;
(510) multiple target element (c1, c2, c3, c4, c5) is identified from described multiple assembly;
Identify the symmetrical plane (p1, p2) in (515) described 3D model;
Determine (520) each described target element (c1, c2, c3, c4, c5) position relative to described symmetrical plane (p1, p2);
According to determined position, described target element is added (525) to respective sets;
Form for each target element and build (530) equivalence class (sa1, sd1); And
Symmetric relation between the equivalence class (sa1, sd1) that storage (535) creates.
16. computer-readable mediums according to claim 15, wherein, described symmetric relation stores with geometric relationship figure.
17. computer-readable mediums according to claim 15 or 16, wherein, described respective sets comprises the described target element (c3) on the either side being positioned at described symmetrical plane (p1, p2).
18. computer-readable mediums according to claim 15, wherein, the equivalence class (sa1, sd1) created stores with geometric relationship figure.
19. according to computer-readable medium described one of in claim 15,16 or 18, wherein, described PDM system (100) is also to not being positioned at described symmetrical plane (p1, p2) target element (c1 on either side, c2, c4, c5) identify, and described target is added into the 3rd group.
20. according to claim 15 to computer-readable medium described one of in 19, wherein, described PDM system (100) is to each target element (c1, c2, c3, c4, c5) distribute sensing relative to one or more symmetrical plane, and wherein, described target element is grouped according to pointing to by each target element described the corresponding signature that limits.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/529,066 US9141731B2 (en) | 2012-06-21 | 2012-06-21 | Symmetry of discovered geometric relationships in a three dimensional model |
| US13/529,066 | 2012-06-21 | ||
| PCT/US2013/046701 WO2013192372A1 (en) | 2012-06-21 | 2013-06-20 | Symmetry of discovered geometric relationships in a three dimensional model |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104395906A true CN104395906A (en) | 2015-03-04 |
| CN104395906B CN104395906B (en) | 2017-12-19 |
Family
ID=48741575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380032695.5A Active CN104395906B (en) | 2012-06-21 | 2013-06-20 | The geometrical relationship found in threedimensional model it is symmetrical |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9141731B2 (en) |
| EP (1) | EP2864910A1 (en) |
| JP (1) | JP6218822B2 (en) |
| CN (1) | CN104395906B (en) |
| WO (1) | WO2013192372A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140172144A1 (en) * | 2012-12-17 | 2014-06-19 | Mitsubishi Electric Research Laboratories, Inc. | System and Method for Determining Surface Defects |
| US20140355888A1 (en) * | 2013-05-31 | 2014-12-04 | Siemens Product Lifecycle Management Software Inc. | Automatic detection of regular patterns of features |
| IN2013MU04141A (en) * | 2013-12-31 | 2015-08-07 | Dassault Systemes | |
| US20150302114A1 (en) * | 2014-04-22 | 2015-10-22 | Siemens Product Lifecycle Management Software Inc. | Duplicate pattern of assembly components in cad models |
| US20150339410A1 (en) * | 2014-05-22 | 2015-11-26 | Siemens Product Lifecycle Management Software Inc. | Cad components with overlay data |
| US10286604B2 (en) * | 2015-03-31 | 2019-05-14 | Benjamin M. Cromeens | Method, system, and apparatus for biological model symmetry |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101609564A (en) * | 2009-07-09 | 2009-12-23 | 杭州力孚信息科技有限公司 | A kind of method for manufacturing three-dimensional grid model of sketch formula input |
| CN102254353A (en) * | 2011-06-10 | 2011-11-23 | 南京大学 | Method for describing characteristics of three-dimensional model |
| US20120109591A1 (en) * | 2010-10-28 | 2012-05-03 | Brian Thompson | Methods and systems for enforcing parametric constraints in a direct modeling interface in computer-aided design |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0526881B1 (en) * | 1991-08-06 | 2002-02-06 | Canon Kabushiki Kaisha | Three-dimensional model processing method, and apparatus therefor |
| JP3602037B2 (en) * | 1999-08-23 | 2004-12-15 | 株式会社フジエ | How to create a moving image data file |
| JP4167390B2 (en) * | 2000-11-20 | 2008-10-15 | 日本電気株式会社 | Object collation method, object collation apparatus, and recording medium recording the program |
| US6844877B1 (en) * | 2001-11-05 | 2005-01-18 | Solidworks Corporation | Automated mirroring of components |
| US7814441B2 (en) * | 2006-05-09 | 2010-10-12 | Inus Technology, Inc. | System and method for identifying original design intents using 3D scan data |
| US20080269942A1 (en) * | 2007-04-26 | 2008-10-30 | David Mitchell Free | Computer system and method for providing real-world market-based information corresponding with a theoretical cad model and/or rfq/rfp data |
| US20120075433A1 (en) * | 2010-09-07 | 2012-03-29 | Qualcomm Incorporated | Efficient information presentation for augmented reality |
| US8907945B2 (en) * | 2010-09-27 | 2014-12-09 | Siemens Aktiengesellschaft | Inferring and maintaining symmetry relationships in a 3-D editor |
-
2012
- 2012-06-21 US US13/529,066 patent/US9141731B2/en active Active
-
2013
- 2013-06-20 EP EP13733203.7A patent/EP2864910A1/en active Pending
- 2013-06-20 WO PCT/US2013/046701 patent/WO2013192372A1/en unknown
- 2013-06-20 JP JP2015518568A patent/JP6218822B2/en active Active
- 2013-06-20 CN CN201380032695.5A patent/CN104395906B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101609564A (en) * | 2009-07-09 | 2009-12-23 | 杭州力孚信息科技有限公司 | A kind of method for manufacturing three-dimensional grid model of sketch formula input |
| US20120109591A1 (en) * | 2010-10-28 | 2012-05-03 | Brian Thompson | Methods and systems for enforcing parametric constraints in a direct modeling interface in computer-aided design |
| CN102254353A (en) * | 2011-06-10 | 2011-11-23 | 南京大学 | Method for describing characteristics of three-dimensional model |
Non-Patent Citations (1)
| Title |
|---|
| MING LI等: "Detecting design intent in approximate CAD models using symmetry", 《COMPUTER-AIDED DESIGN》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104395906B (en) | 2017-12-19 |
| EP2864910A1 (en) | 2015-04-29 |
| JP6218822B2 (en) | 2017-10-25 |
| US20130346029A1 (en) | 2013-12-26 |
| WO2013192372A1 (en) | 2013-12-27 |
| US9141731B2 (en) | 2015-09-22 |
| JP2015525422A (en) | 2015-09-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102648256B1 (en) | Centralized Rendering | |
| CN104395906A (en) | Symmetry of discovered geometric relationships in a three dimensional model | |
| US10528605B2 (en) | Crowdsourced training of textual natural language understanding systems | |
| CN104428773B (en) | Sorted in variable design system optional constraint | |
| CN103677248A (en) | Display apparatus for multiuser and method thereof | |
| US9949140B2 (en) | Visual representation of signal strength using machine learning models | |
| CN102339474A (en) | Layer composition, rendering, and animation using multiple execution threads | |
| EP3575966B1 (en) | Method and system for handling engineering data in a multi- engineering system environment | |
| Bihanic et al. | Models for visualisation of complex information systems | |
| CN102934116B (en) | Identify the geometric system and method owing definition due to singularity constraint scheme | |
| Vasista et al. | Role of metaverse in the fourth industrial revolution for providing customer experiences | |
| CA2885914C (en) | Managing inferred data | |
| US10782947B2 (en) | Systems and methods of diagram transformation | |
| US20160062728A1 (en) | Drawing control apparatus, information sharing system, drawing control method, and recording medium storing drawing control program | |
| US11475253B2 (en) | Data graph focus mode | |
| CN108920230A (en) | Response method, device, equipment and storage medium for mouse suspension operation | |
| CN105229643A (en) | Amendment is tied and free curvilinear net | |
| JP2016522500A (en) | Rule-based constraint interaction in geometric models | |
| US20200293576A1 (en) | Operating on large data sets | |
| CN104395905A (en) | Representation and discovery of geometric relationships in three dimensional model | |
| JP6494665B2 (en) | Intelligent constraint selection for positioning tasks | |
| Bendoly | Best Practices in visual design | |
| US20230252207A1 (en) | Method and system for generating a geometric component using machine learning models | |
| JP6338696B2 (en) | How to generate and edit large constraint networks | |
| US20170168569A1 (en) | Providing haptic feedback to a user of a touch surface display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: texas Patentee after: SIEMENS INDUSTRY SOFTWARE Ltd. Address before: texas Patentee before: SIEMENS PRODUCT LIFECYCLE MANAGEMENT SOFTWARE Inc. |
|
| CP01 | Change in the name or title of a patent holder |